1. Trailer Brakes
  2. etrailer
  3. Electric Drum Brakes
  4. 8000 lbs Axle
  5. 12-1/4 x 3-3/8 Inch Drum
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
  9. 17-1/2 Inch Wheel
Electric Trailer Brake Kit w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right Hand - 8K

Electric Trailer Brake Kit w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right Hand - 8K

Item # AKEBRK-8
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Our Price: $248.26
Trailer Brakes
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Shipping Weight: 38 lbs
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AKEBRK-8 - 8000 lbs Axle etrailer Electric Drum Brakes
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Self-adjusting electric brakes measure 12-1/4" x 3-3/8". Brake pads are made of durable friction material for improved braking. E-coated backing plates resist rust. Dust shields protect from debris. Fit 15" or larger wheels. Lowest Prices for the best trailer brakes from etrailer. Electric Trailer Brake Kit w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right Hand - 8K part number AKEBRK-8 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (63)
  • Q & A (21)
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  • Why etrailer?

etrailer by AxleTek Trailer Brakes - AKEBRK-8

  • Electric Drum Brakes
  • 8000 lbs Axle
  • 12-1/4 x 3-3/8 Inch Drum
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • etrailer
  • Self Adjust
  • Brake Set

Self-adjusting electric brakes measure 12-1/4" x 3-3/8". Brake pads are made of durable friction material for improved braking. E-coated backing plates resist rust. Dust shields protect from debris. Fit 15" or larger wheels.


  • Electric brakes are easier to install and offer more user control than hydraulic brakes
    • Require only an electric brake controller (sold separately) - no actuator or hydraulic lines necessary
  • Automotive-grade friction material is molded to brake shoes
    • Pads are fully bonded - not riveted - to shoes for long life and more braking torque
    • Less chance of cracking and crumbling that can lead to mechanical lockup, thanks to tapered edge and circular grinding
  • Self-adjusting brakes do not require periodic manual adjustment like standard brakes
    • Fine-tooth brake adjustment gears allow for a more precise setting
  • Dust shields protect from debris while you're towing
  • E-coated backing plates resist wear and corrosion
  • Adjuster plugs (included) cover access holes to keep dirt and grime out of the assemblies and off of the shoes
  • Left-hand (driver's-side) brake assembly and right-hand (passenger's-side) brake assembly included
    • Mounting bolts and hardware (BRKH122508) sold separately
  • QAI and CSA certified


  • Application: most standard hub-and-drum assemblies, including Dexter and Lippert (LCI)
  • Dimensions: 12-1/4" diameter x 3-3/8" wide
  • Mounting flange bolt pattern: 4 bolt
  • Wheel size: 15" or larger
  • Axle rating: 8,000 lbs
  • Limited 1-year warranty

Self-Adjusting Brakes Don't Require Routine Adjustment

Standard electric brake assemblies require manual adjustment of the brake shoes over time to provide longer-lasting and more efficient braking performance. With self-adjusting brakes, the brake shoes are always properly aligned, so there's no need to manually adjust the brakes after the initial adjustment. As a result, you get optimum performance without having to take the time to continually perform this type of maintenance.

Thoroughly Tested for Safety

These brake assemblies meet the requirements for certification by the Canadian Standards Association (CSA). The CSA creates standards, which when complied with ensure a safe and quality product. These brake assemblies underwent extensive testing to measure stopping distances when braking. These brakes have also been tested by QAI for braking performance in a complete automotive setup and under real-world conditions to provide the most realistic scenario for the everyday driver.

Automotive-Grade Friction Material

Each shoe on these brake assemblies is lined with automotive-grade friction material for improved stopping performance and longevity. The friction material is fully bonded onto the surface of the brake shoe. This lining is custom-molded for a perfect fit. The edges are tapered to ensure long-lasting performance. This taper, along with the circular grinding that the lining undergoes, helps to prevent cracking and crumbling. This durability helps to prevent mechanical lockup, which can occur when brake shoes are excessively worn or broken.

The friction material is also SAE-N certified, which means that it is an environmentally safe product that complies with California and Washington regulations regarding the composition of brake pads. As a result, this material not only provides high-performance braking that can endure the test of time, but it is also environmentally friendly and safe for use throughout the United States and Canada.

B1208E-11 AxleTek 12-1/4" x 3-3/8" LH Self-Adjusting Electric Brake Assembly - Drivers Side - 8K Axles - Dust Shield

B1208E-12 AxleTek 12-1/4" x 3-3/8" RH Self-Adjusting Electric Brake Assembly - Passengers Side - 8K Axles - Dust Shield

Customer Reviews

Electric Trailer Brake Kit w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right Hand - 8K - AKEBRK-8

Average Customer Rating:  5.0 out of 5 stars   (63 Customer Reviews)

Self-adjusting electric brakes measure 12-1/4" x 3-3/8". Brake pads are made of durable friction material for improved braking. E-coated backing plates resist rust. Dust shields protect from debris. Fit 15" or larger wheels.


Great customer service! 679525


This has been the best experience with any online purchase I have used thank you and I will be purchaseing again in the future 642096


Great price, great quality! About a year as I installed them, had zero problems! 658679


Great Price, good looking product. Will tell how well they work when we start using trailers this spring 357391


I am usually not one to buy aftermarket parts, I always prefer “Made in USA”. However these brake assemblies were better then expected and fit perfectly. I’m yet to see the wear factor but they look good. 604709


Exactly what I ordered. Looks like a good product, haven't used the RV yet to try them out. Fitting was straightforward. My only disappointment was not getting a break on delivery cost to Canada but...... Good overall service from Ashley, would order again from etrailer if I needed anything 619851


The complete brake plates fit and worked perfect.I will be replacing the other two on my trailer this winter. 571143


so far great for the price 575197


Excellent service. I ordered on the 29th (evening) and all items were here afternoon of the 31st! The customer service rep. helped me find the exact replacement parts that worked for my application. The pricing was a lot better than I could find on the internet or locally. I will definitely order from etrailer again. 361634


Way cheaper than original Dexter and came w/ a shield. It's looks exactly the same and performs like Dexter, but you save a lot money. My friend saw these on my trailer and couldn't believe how much I paid. So, he had me order 4 set of them for him. I just torch off old mounting bolts and the brake assembly fit perfectly. My trailer is used mon-fri for work. Now, I have working trailer brakes. 376888


Great catalogue online. Easy to find what you need! Fast shipping! Thanks! Great prices !!! 899758


Great costumer service. And great quality product 883797


Product delivered as ordered. The price was the best/lowest I could find. Have just installed four trailer brake assembly’ and it went well. Very happy!! 869095


Steve Z was real nice and got this order out the door on a Friday which really helped! Haven't had the brakes installed yet, so can't review them, but so far so good. 853241


Exact replacement 729035


The parts fit like the originals. Save lots of time in ordering the parts from etrailer. 728659


Parts showed up on time and in good condition. Parts fit as advertised. Really happy with my purchase and shipping. 638699


Brakes are great, and stay in adjustment. 60k on them in less then a year. 597595


Bolt right on, adjust, and hook up electric. It’s that easy! 590291


Product fit perfectly Works excellent 586030


Great service and product pricing!!!!!! !!!!!!!!!!!!!!!!!!!!!!!! 498703


Great Seller, FAST ++++++++++++++++++++ ++++++++ 457595


Great Seller and Fast! 457553


Fit perfect on my Dexter axles and a lot cheaper 449595


Was here in a short time, got us back on the road !! Thanks! 378082

Show More Reviews

Ask the Experts about this etrailer Trailer Brakes

  • Electric Brakes for Rockwell 8,000 lb Torsion Axles
    Electric brakes such as Electric Trailer Brake Kit # AKEBRK-8 do not fit specific axles. These are 8,000 lb rated brakes with a 4-bolt mounting flange pattern and are 12-1/4" diameter x 3-3/8" wide, so you would need that mounting bolt pattern and a hub and drum assembly that allows these brakes to fit. I've added a link to a video review of the brakes for you to take a look at.
    view full answer...
  • What is the Four Bolt Brake Mounting Flange for 8,000 Lb Axles
    The four bolt brake mounting flange for 8,000 lb trailer axles is going to be more or less an industry standard. This industry standard is 3-5/8" across left to right on center and 3-7/16" top to bottom on center. This could very well vary 1/16" depending on where you measure but rest assure if you have an 8,000 lb trailer axle with four bolt brake mounting flange the Electric Trailer Brake with Dust Shield part # AKEBRK-8L should be the correct braking assembly for you.
    view full answer...
  • Recommended Hubs and Brakes for 2014 Heartland Bighorn 3010re
    From what I was able to find in my research, the 2014 Heartland Bighorn 5th Wheel has a GVWR of 14000-lbs, so you've likely already got 7k components on them. You should be able to change out the backing plates, hubs, and brakes on your trailer so you can upgrade to higher rated assemblies, but I do recommend checking a couple things on your tow vehicle first. It's possible that your weak braking is due to a wiring or brake controller issue on the vehicle; it could also be something as...
    view full answer...
  • 8,000 lb Electric Trailer Brake Assemblies That Measure 12-1/4 Inch x 3-3/8 Inch
    I saw the Q&A you were referring to, which is about a decade old as of this writing and there are no 12" diameter x 3-3/8" wide brake assemblies we offer, just the 12-1/4" diameter x 3-3/8" wide # AKEBRK-8 that are rated for 8,000 lb axles. You may need to change your hub and drum to get one compatible with the larger brakes that are now available. To do this you will need to know what bearings your current hub has. You will need to take apart your current hub assembly and look at the...
    view full answer...
  • Replacement Brakes and Hub/Drum Assemblies for 8K Axles on Trailer
    If you have electric brakes on your 8K axles then you'll need the Brake Kit # AKEBRK-8 along with 2 of the Hub and Drum Assembly # AKHD-865-8-EZ-K per axle. For hydraulic brakes you need the Left # K23-171-00 and Right # K23-172-00 brake assemblies along with 2 of the Hub and Drum Assembly # AKHD-865-8-EZ-K per axle. Attached are some videos for you to check out.
    view full answer...
  • Adjusting a Self-Adjusting Brake Assembly on 8K Axle to Easily Remove Drum
    The Self-adjusting Brake Assemblies like # AKEBRK-8 still have a manual adjuster to allow you to relieve that brake shoe pressure. You simply remove the plug on the back of the assembly and adjust the manual dial using a small screwdriver or brake adjuster spoon like # W80630. I've attached a video to assist.
    view full answer...
  • AxleTek Brake Assembly Recommendation for 8k Axles with 4 Bolt Mounting Pattern
    Actually our etrailer.com brand brake assemblies are rebranded AxleTek assmemblies. So we have the 8k left and right assembly set # AKEBRK-8 which is most likely what you need but these are 12-1/4 inch in diameter by 3-3/8 inches wide and attach with a 4 bolt pattern.
    view full answer...
  • Choosing the Correct Replacement Electric Brakes for 8,000 lb Axle
    Knowing your axle's weight capacity - in your case 8,000 lbs - is the first step towards finding the correct replacement brakes. The brakes you referenced, which are sold together as the Electric Trailer Brake Kit # AKEBRK-8, also have a 4 bolt mounting flange pattern, which you'll also need to have in order for these brakes to work as replacements, as well as wheels that are 15" or larger. I've added links to review videos of the individual brakes for you to take a look at.
    view full answer...
  • Picking Out Replacement Brake Assemblies for 2010 Keystone Alpine 3640RL
    I can help you find the right assemblies, but I do not know exactly which ones you have on your trailer. I looked up your Keystone Alpine 3640RL and it appears to be rated for around 15k and has a tandem axle setup so you'll most likely need higher rated assemblies. To pick out the correct brake assemblies for your trailer you need to know a few things. You will want to measure the inner diameter of your hub/drums and the depth of the drums to determine what brake assembly dimensions...
    view full answer...
  • Electric Trailer Brake Kit for 8K Drum Brakes
    There are a pair of brake kits which are rated for 8,000 lbs which may work for you. The Electric Trailer Brake Kit w/ Dust Shields # AKEBRK-8 and Dexter Electric Trailer Brake Kit # 23-434-435 have a 4 bolt mounting flange bolt pattern, are 12-1/4" diameter x 3-3/8" wide, and are self-adjusting. These will only require the use of an electric brake controller; I've added a link to our page with each of our controllers for you. I've also added a link to a video review of the Dexter brakes...
    view full answer...
  • How to Select Replacement Electric Drum Brakes for Tandem Axle Gooseneck Trailer
    Replacement electric drum brakes needs to be selected based on the axle weight rating to ensure they have the necessary stopping power. We do offer electric drum brakes in your specified size, 12-1/4 x 3-3/8-inches, and this size comes in ratings for 8K, 9K and 10K axles. All are displayed on the linked page. Your axles should have a sticker or plate that indicates their weight rating. You'll also want to note the brake mounting bolt pattern to make sure you choose new brakes that match....
    view full answer...
  • Troubleshooting Trailer Brakes that Lock Up When Brakes are Touched
    Sounds like you have a short between the stoplight/blinker circuit of your trailer wiring and the brake output circuit which is putting full 12 volts on the brake output circuit any time you touch the brakes which locks them up. I'd recommend going over the wiring of the trailer looking for any cut or exposed wire and fix as needed.
    view full answer...
  • Does the Electric Trailer Brake Kit # AKEBRK-8 Come with a Left and Right Assembly
    Yes, the Electric Trailer Brake Kit # AKEBRK-8 comes with both a left and right hand 12-1/4" x 3-3/8" brake assembly. This is reflected in the product pictures and the review video.
    view full answer...
  • Can 12-1/4 Inch x 3-3/8 Inch Electric Brakes Be Added To a Lippert 7,000 Lb Trailer Axle
    In order to install a set of 12-1/4" x 3-3/8" electric drum brakes on a Lippert 7,000 lb trailer axle you would need to remove the old 5 bolt brake mounting flange via cutting and then weld a new 7 bolt brake mounting flange on with absolute precision. If this is something that you feel you are capable of then you can use the Electric Trailer Brake Kit part # AKEBRK-8 but you would also need new hubs and drums like the Trailer Hub and Drum Assembly part # AKHD-865-8-EZ-K in addition to...
    view full answer...
  • Replacement 12-1/4 Inch x 3-3/8 Inch Braking Assembly with Four Bolt Brake Mounting Flange
    If the braking assemblies you have now are indeed 12-1/4" x 3-3/8" and use a four bolt brake mounting flange then you are going to want to use the Electric Trailer Brake Kit w/ Dust Shields part # AKEBRK-8, not the Electric Trailer Brake Kit w/ Dust Shields part # AKEBRK-10. I have attached a photo which shows the correct way to measure your braking assembles for replacement. You will also need to verify that the bolt holes on your brake mounting flange are 3-7/16" apart on center from...
    view full answer...
  • Will etrailer.com 12-1/4 inch by 3-3/8 inch Brake Assemblies Replace Dexter Brand
    For your Dexter drums that take assemblies that are 12-1/4 inch by 3-3/8 inch our etrailer.com brand asssembly set part # AKEBRK-10 is a confirmed fit and will save you money over the Dexter kit # 23-450-451. These are both kits for 10k axles. If instead you have 8k you'd need # AKEBRK-8 for etrailer.com brand and # 23-434-435 for Dexter.
    view full answer...
  • Replacement Self-Adjusting 8K Brake Assemblies for Dexter Axle
    For your 8K Dexter axle we have 12 x 3-3/8-inch self-adjusting electric drum brake kit # K23-532-533-00. These brakes use a 4-bolt mounting pattern and they fit trailer wheels from 16-inches up to 17-1/2-inches. These Dexter brakes are USA-made and they include mounting hardware. You will need two kits. If you're looking for a lower-priced option we also have kit # AKEBRK-8 from AxleTek. These do not include hardware so you can use part # BRKH122508 for a matching hardware kit. Pricing...
    view full answer...
  • Upgrading From 7K to 8K Electric Brake Assemblies on Trailer for Increased Braking Power
    You should be able to change out the backing plates, hubs, and brakes on your trailer so you can upgrade to higher rated assemblies, but I do recommend checking a couple things on your tow vehicle first. It's possible that your weak braking is due to a wiring or brake controller issue on the vehicle. If this is the case, changing out the brake assemblies on the trailer won't resolve the issue. I first recommend testing the vehicle side 7-Way with a Multimeter like # BTMT15. Make sure...
    view full answer...
  • Converting Drum Brakes On A Dexter Military Trailer Axle With 8 On 6-1/2
    I would be happy to help you choose the correct brake setup for your Dexter Torflex Axle, however there are no manufacturers that currently make electric disc brakes. All disc brakes are powered by a hydraulic cylinder. If you wish to use a disc brake setup controlled by an in-cab brake controller, you will want to consider the HydraStar Electric Over Hydraulic Actuator for Disc Brakes part # HBA16 and an electric brake controller such as the Tekonsha Prodigy P3 Trailer Brake Controller...
    view full answer...
  • How to Upgrade to 8 on 6-1/2 Inch Wheels with a 8,000 Lb Axle
    In order to determine if a drum/hub with a 8 on 6-1/2" bolt pattern will work with the braking assemblies you have on your trailer now you will need to first determine the size of hub/drum you need which can be done by measuring your existing hub/drum (see photo). You would then want to know the inner bearing, outer bearing, and grease seal numbers. If the numbers are not visible then you will want to measure where each of them seat on the spindle with a digital caliper like part # 301-17068...
    view full answer...
  • 2015 Palomino Sabre 36QBOK Brakes and Bearing Recommendation
    I looked in several places online and couldn't get a definite axle capacity for your trailer. I'd assume it's a pretty high capacity since it's a tandem axle trailer that weighs 12k and has 3k of capacity. So most likely you have 8k axles like what the part # 8-285-11 hub fits which has bearing numbers # 25580 and # 02475 with grease seal # RG06-070. Then for brake assemblies part # AKEBRK-8. Get me the diameter of your axles though and I'll be able to get you a better recommendation. Typical...
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Expert Research:
Adam R
Installed by:
Cole B
Updated by:
Sarah W
Written by:
Alexander C

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